Brake disc



FIG. 1 is a front perspective view of a brake disc showing my design.

FIG. 2 is a front view thereof; and,

FIG. 3 is a side view thereof, the opposite side view being a mirror image thereof.

The broken line showing in FIGS. 1-3 is for the purpose of illustrating portions of the brake disc that forms no part of the claimed design. 

CLAIM The ornamental design for a brake disc, as shown and described. 